diff --git a/backup/util/helper/backup_cron_helper.class.php b/backup/util/helper/backup_cron_helper.class.php
index 6145d84883c32..d01833eade426 100644
--- a/backup/util/helper/backup_cron_helper.class.php
+++ b/backup/util/helper/backup_cron_helper.class.php
@@ -554,7 +554,7 @@ public static function get_automated_backup_state($rundirective = self::RUN_ON_S
     public static function set_state_running($running = true) {
         if ($running === true) {
             if (self::get_automated_backup_state() === self::STATE_RUNNING) {
-                throw new backup_exception('backup_automated_already_running');
+                throw new backup_helper_exception('backup_automated_already_running');
             }
             set_config('backup_auto_running', '1', 'backup');
         } else {